Cleaning and Sterilizing Apparatus Combined with an Ultra-Violet Lamp

ABSTRACT

A cleaning or sterilizing apparatus combined with an UV lamp consisting of an upright compact vacuum cleaner ( 26 ) comprising a dust container ( 27 ) with a transparent bottom ( 28 ) and a suction nozzle ( 34 ) incorporated in the bottom ( 28 ) and a protective housing ( 31 ) which covers the dust container ( 27 ) and which incorporates a fan ( 53 ) with a centrifugal dust filter ( 54 ) and an UV germicidal lamp fixture ( 14 ) for destroying micro-organisms on a surface to be cleaned and inside the dust container ( 27 ). The dust filter ( 54 ), which consists of a cylindrical grating ( 62 ) with or without a cylindrical paper filter ( 63 ), is mounted to the cylindrical opening ( 59 ) of the fan&#39;s impeller ( 53   a ) and located partly outside of the fan&#39;s casing ( 60 ) but inside the dust container ( 27 ). Rotating at high speed, the fan&#39;s impeller ( 53   a ) sucks in the air through the dust filter ( 54 ), which throws of dust particles outward toward the space inside the dust container ( 27 ) preventing clogging, separating particles from the air and obtaining purification of the air.

TECHNICAL FIELD

The invention relates to conventional vacuum cleaners or electrically or mechanically driven brooms (sweepers) which are combined with ultraviolet lamps and more particularly to UV germicidal lamps having germicidal effect for killing or inactivating bacteria, viruses and other primitive organisms during cleaning and UV black-light lamps having black-light effect for improving visibility of white, luminous, fluorescent particles and substances also during vacuum cleaning.

BACKGROUND ART

According to the prior art, there are two types of ultraviolet lamps, UV lamp having germicidal effect or UV germicidal lamps and UV lamp having black-light effect or UV black-light lamps, which are relevant to the invention disclosed in the present application. The UV germicidal lamp is low-pressure mercury vapour discharge lamp with a tubular glass envelope, which emits the short-wave ultraviolet radiation with a peak at 253.7 nm (UV-C) for germicidal action in which killing or inactivating bacteria, viruses and other primitive organisms and therefore the lamp has germicidal or sterilizing or disinfecting effect. Lamp glass filters out the 185 nm ozone-forming line. UV-C can burns skin and cause eye injury either from direct or reflected radiation. The UV germicidal lamp requires usage of protection goggles, glove, skin protection and eyes protection (ordinary glass) and therefore is not suitable to be used for illumination. It is understood that the UV lamp fixture incorporates an UV lamp and all other electrical and electronic parts, a fixture or armature, a transparent protection cover, reflexive material etc which are needed to the lamp to work and therefore those parts will be omitted from the following text.

According to the prior art, in one embodiment of the invention disclosed in the patent DE 8807550 U, UV lamp, which is used for sterilization of micro-organisms, is attached to a handling tube of a vacuum cleaner and therefore that lamp illuminates the surface of floor directly with germicidal radiation and everything around with reflected germicidal radiation from the cleaning surface. As skin and eyes must be protected from the germicidal radiation, the UV lamp disclosed in that patent is not suitable to be used for a purpose of improvement of visibility even for sterilization without the protection for eyes and skin. In the claim 3 of the mentioned patent, a point where the UV lamp is attached to the handling tube is not specified, while in FIG. 3 of the drawing is shown that the lamp is located in the front of the handling tube and therefore the lamp could be damaged by the furniture. Also, in FIG. 3, is obvious that the lamp is without any protection against indirect radiation which can damage human eyes and skin.

In another embodiment of that patent, UV lamp, which is used for sterilization of micro-organisms, is located inside the suction nozzle toward the cleaning surface.

UV germicidal lamps, which are also used inside suction nozzles of vacuum cleaners, are disclosed in patents no: U.S. Pat. No. 4,907,316, U.S. Pat. No. 5,233,723 and GB648967. The incorporation of the UV germicidal lamp inside the suction nozzle of the vacuum cleaner increases the height and such suction nozzle can not enter in the narrow space between the floor and the furniture where the conventional suction nozzle can. As the suction nozzle often strikes at the furniture, the UV germicidal lamp incorporated inside the suction nozzle can be disconnected or easily damaged and therefore such technical problem could be solved using the UV germicidal lamp which is located in a separate and attachable housing to the conventional suction nozzle, as disclosed in one embodiment of the present invention. As the housing of an upright vacuum cleaner often strikes at the furniture, the UV germicidal lamp incorporated inside the housing can be disconnected or easily damaged and therefore such technical problem could be solved using the UV germicidal lamp mounted to the housing through shock-absorbers.

According to the above mentioned patents the UV lamps radiate the cleaning surface through transparent sheets and transparent suction nozzles (operating as any other conventional suction nozzle) and therefore they are not combined with dust containers. In the patent JP8131522 UV germicidal lamps are used in the housing of the conventional canister and upright vacuum cleaner to “radiate the surface to be cleaned, and dust or like so as to sterilize them”.

According to the prior art, the UV germicidal lamp and a dust container having a transparent bottom and a dust container having a transparent suction nozzle are not used in a combination with a protective housing for preventing reflective radiation, a security on/off switch for preventing a risk from radiation in “up” position and a centrifugal dust filter incorporated in the motor-fan, all as parts of the present invention. The centrifugal dust filter keeps dust particles with micro-organisms inside the dust container while the conventional vacuum cleaner keeps particles with micro-organisms in the dust bag or container and in the conventional filter. So dust particles with micro-organisms in the dust container of the present invention can be exposed to radiation and sterilisation from the UV germicidal lamp all time while particles with micro-organisms collected in the filter of the conventional vacuum cleaner can not.

According to the prior art, the dust container having the transparent bottom, as the part of an electrically or mechanically driven broom or sweeper, is not used in a combination with a UV germicidal lamp.

According to the prior art disclosed in mentioned patents, the suction nozzle or the housing of the upright vacuum cleaner having UV germicidal lamp has no any protection from reflective radiation from the floor and from a direct radiation if the suction nozzle or the housing is in “up” position or turned toward the person who cleans (or others).

According to the prior art, in the invention disclosed in the patent DE4206190, the UV germicidal lamp, which surrounding the handling tube of a vacuum cleaner, conducts radiation through optical fibres toward the cleaning surface. In such construction UV-C radiation is not directed toward the handling tube and the UV germicidal lamp doesn't radiate the air which passing through the handling tube. Also, that lamp doesn't radiate the cleaning surface and a dust bag through reflected radiation coming through internal side of the connecting parts which internal surface is coated with reflective material, as disclosed in one embodiment of the invention.

According to the prior art, a sterilization chamber with or without a transparent tube, is not used in any combination with a UV germicidal lamp and the handling tube of a conventional vacuum cleaner.

According to the prior art, UV germicidal lamp in the invention disclosed in the patent U.S. Pat. No. 3,975,790 is used for a purification of the exhausted air and therefore UV-C radiation can not destroy the rest of micro-organisms left in the dust bag and in the conventional filter of a conventional vacuum cleaner.

An important part of the vacuum cleaner having the germicidal lamp is an UV black-light lamp with black-light effect which simultaneously with the germicidal lamp contributes in increasing visibility and cleaning efficiency. Those lamps are so linked to form a single general inventive concept which is a requirement of unity of the invention. The UV black-light lamp is low-pressure mercury vapour lamp with phosphor coating on the inner surface of the fluorescent tube which absorbs the UV-C emitted by the low pressure mercury arc and emits longer UV wavelengths (UV-A, between 345 to 400 nm) and therefore is used for black-light effect which causing fluorescent particles and substances to glow and white and luminous particles to be seen better.

UV-A can not burn skin and cause eye injury either from direct or reflected radiation. The UV black-light lamp can be used for illumination without protection goggles, glove, skin protection and eye protection.

According to the prior art, in one embodiment of the invention disclosed in the patent DE 8807550 U, UV lamp, which is used for sterilization of micro-organisms, is attached to a handling tube of a vacuum cleaner and therefore that lamp illuminates the surface of floor directly with germicidal radiation and everything around with reflected germicidal radiation from the cleaning surface. As skin and eyes must be protected from the germicidal radiation, the UV lamp disclosed in that patent is not suitable to be used for a purpose of improvement of visibility without the protection for eyes and skin. As the construction of any UV germicidal lamp does not consist of any fluorescent material, the UV lamp disclosed in that patent can not provide black-light effect, which causes fluorescent particles and substances to glow or to be visible and white and luminous particles and substances to be better visible and therefore such lamp can not be used for improving visibility of said particles at the cleaning surface during cleaning.

According to the prior art, UV black-light lamps with black-light effect are not used in any combination with the vacuum cleaners or electrically or mechanically driven broom (with or without an UV germicidal lamp) to cause white and luminous particles and substances to be better visible and fluorescent particles and substances to glow and to be better visible or to be visible even if they are not visible under normal light and therefore they are not used for improvement of visibility and ocular detection of such particles and substances during cleaning.

DISCLOSURE OF THE INVENTION

The suction nozzle of a vacuum cleaner, which incorporates an UV germicidal lamp with germicidal effect, strikes often at the furniture and therefore the lamp could be disconnected or easily damaged during cleaning and sterilizing. If the suction nozzle of the vacuum cleaner is lifted or it is not enough protected, the radiation from the UV germicidal lamp can radiate a cleaning person causing damage to eyes and skin.

According to the above, technical problems consists of the following questions:

How to protect UV germicidal lamp to be damaged during cleaning?

How to provide an additional protection from UV-C radiation for the person who cleans?

How to radiate accumulated dust in the dust container and the cleaning surface at the same time during cleaning?

How to protect the person who cleans to inhale bacteria and viruses from the air, which is spread in a room by a vacuum cleaner?

How to sterilize the surface in the room in which nobody is present?

The answers on the above questions or technical problems, which the present invention solves, are comprised in novel characteristic features of the invention as following:

In one embodiment of the present invention, the UV germicidal lamp fixture is located in a protective housing which is attached, as an independent attachment, at the back of the conventional suction nozzle. Moving forward, the conventional suction nozzle strikes at the furniture and therefore it indirectly protects the lamp inside the protective housing to be damaged. In addition to shock-absorbing arms which are located between the protective housing and the conventional suction nozzle amortize strikes. The protective housing has an inner compartment, which surrounding the UV germicidal lamp fixture. The lamp fixture is attached to the ceiling toward the cleaning surface and therefore the radiation which is reflected from the cleaning surface is directed toward the space between the inner compartment and the protective housing preventing leakage of radiation outside and providing an additional protection. An automatic mechanically releasing arm of an on/off switch connected to the UV germicidal lamp fixture disconnects electricity from the lamp fixture when the protective housing is lifted or when a person who cleans releases it by putting away the hand from the handle (which incorporates the releasing arm of the switch) and therefore radiation outside of the protective housing is avoided.

In another embodiment of the invention, the UV germicidal lamp fixture, which is located inside the electrically or mechanically driven broom or a compact vacuum cleaner, radiates dust in a dust container and through the transparent bottom of the dust container radiates the cleaning surface. Bacteria, which are not destroyed instantly on the cleaning surface, would be destroyed in the dust container later during cleaning.

In another embodiment of the present invention, the UV germicidal lamp fixture, which is located inside a sterilization chamber, radiates the air or the air with dust which passing through the sterilization chamber or the transparent handling tube (if it is installed in the chamber). The exhausted air, which is going out from the vacuum cleaner, contains sterilized viruses and bacteria which are harmless to a person who inhales them during cleaning. The sterilization chamber surrounds the UV germicidal lamp fixture and the transparent handling tube (if it is incorporated in the chamber) and provides a protection from radiation. In this embodiment of the present invention when the sterilization chamber is used without the transparent tube, the sterilization chamber which has a larger volume in compare with the handling tube, can reduce the speed of the air which passing through the chamber and therefore increase the time of radiation and sterilization of bacteria, viruses and micro-organisms. The UV germicidal lamp fixture, which is located in the sterilization chamber, can indirectly radiate by reflection the cleaning surface and dust bag if the internal surface of the connecting tubes of the vacuum cleaner are coated with a reflective material. If an ozone type UV germicidal lamp fixture is used inside the sterilization chamber, ozone which is produced by the UV lamp fixture will be spread on the surface in a room by the vacuum cleaner killing bacteria and viruses on the surface.

Due to cloudy, dark days and short days during a winter period, cleaning is mostly performed under artificial illumination mostly from ceilings and therefore the cleaning area especially under tables, beds etc is very bad illuminated. Due to bad visibility some areas could be left unclean and the cleaning must be repeated often or an additional cleaning is needed and therefore technical problems consist of the following questions:

How to improve visibility of the cleaning area simultaneously with cleaning and sterilizing? How to improve visibility at the cleaning area especially under tables, beds etc during short dark winter days and cloudy days in order to avoid often cleaning or to use the additional cleaning for example with water and chemical?

How to improve control and efficiency of the cleaning?

How to detect during cleaning fluorescent substances contained in dry animal urine, hydraulic or regular motor oil etc which are penetrated in the cleaning surface and which are not visible under artificial light, germicidal light and daily light? How to detect cracks on the cleaning surface during cleaning?

How to protect an UV black-light lamp from damaging during cleaning?

How to supply electricity to the UV black-light without connection to mains?

The answers on the above questions or technical problems, which the invention solves, are comprised in the novel characteristic features of the present invention as follows:

In one embodiment of the present invention, an UV black-light lamp fixture having black-light effect is located on the handling tube or broom's stick or suction nozzle from behind so the suction nozzle strikes at the furniture during movement and because of that protects the lamp to be damaged. Shock-absorbing arms absorb shocks of strikes. In each movement of the suction nozzle or the broom's stick forward, the black-light lamp fixture illuminates the cleaning area behind the suction nozzle causing the rest of white, luminous and fluorescent particles, which are not removed, to glow or to be better visible indicating a need to move the suction nozzle backward for an addition cleaning of that surface. The germicidal lamp having sterilizing effect combined with the UV black-light lamp fixture having black-light effect during cleaning simultaneously sterilizing and improving visibility of the cleaning surface especially under tables, beds etc and during short winter days causing white particles of dust and accumulated formation of dust, luminous, fluorescent particles and substances to be much better visible in compare with the illumination from artificial ceiling light. Due to sterilization and improved visibility of visible and non-visible particles and substances contained in dry animal urine, hydraulic or regular motor oil etc, often cleaning or an addition cleaning is avoided and the control, quality and efficiency of cleaning are improved.

Due to low energy consumption and a standard operating voltage of the germicidal lamp fixture and the black-light lamp fixture of the present invention, the lamps in a combination with a cleaning apparatus can operates on batteries avoiding any connection to mains by a cable. During vacuum cleaning the conventional filter system is quickly clogged with dust particles and therefore the suction efficiency is not sufficient and a powerful motor-fan is needed for suction. In spite of very high efficiency of today conventional (HEPA) filters, a very small percentage of dust, bacteria and viruses, which passing through the conventional filters, can damage bronchi of lungs due to very high speed (causing allergy or asthma) and still spread some diseases, specially if the filters and bags are not changed regularly (and smell of dust is an indication for that).

During and after cleaning with powerful vacuum cleaners airborne bacteria in dust particles fall all around the room on the surface of the furniture, floors etc. so the surface must be cleaned with another cleaning method. Conventional vacuum cleaners comprising conventional filters, powerful fans, dust-bags and cable connection to the mains are more expensive than the vacuum cleaners according to the invention. Also, expensive filters (HEPA filters, which can cost more than the vacuum cleaner) must be changed very often. The cyclone technology which is combined with conventional vacuum cleaners is helpful but can not eliminate a need for expensive conventional filters. Static and vibration filters are expensive and require frequently cleaning.

Industrial vacuum cleaners or other similar apparatus-collectors in the processing industry use conventional filters for mechanical separation and collection of airborne particles during or after grinding, sanding, sawing, sweeping and ventilating. Those filters are also quickly clogged with particles and the suction efficiency is not sufficient and therefore filters must be changed frequently.

Air-conditioners, air-purifiers or other stationary filtration systems for air purification are not primary designed to collect airborne dust particles and therefore such systems do not contain dust containers. Airborne dust particles in a room will not be removed by mentioned devices and dust particles will fall on the surface and accumulate there after some time. It requires vacuum cleaning etc.

Filtrating of exhausted gases from combustion chambers and combustion engines is a big problem and require efficient and inexpensive filtration.

Concerning the above mentioned, technical problems consist of the following questions:

How to eliminate or reduce clogging of the filter?

How to reduce consumption of power?

How to improve suction efficiency?

How to reduce contamination or how to improve filtration of exhausted gases?

How to facilitate emptying of a dust container and how to prevent falling dust particles?

The answers on the above questions or technical problems, which the invention solves, are comprised in the novel characteristic features of the present invention as follows:

In one embodiment of the present invention, the impeller of axial or radial/centrifugal fan of a vacuum cleaner is provided with a centrifugal dust filter with or without cylindrical filter made of any filtrating material (paper etc). The centrifugal dust filter eliminates clogging and therefore a need for very powerful motor-fan/blower with so strong power to overcome resistance of conventional filters during three steps filtration (as usually) and therefore the power or “clean watts” of the smaller motor-blower/fan with the new type of filter can provide the same or similar efficiency of cleaning as the conventional vacuum cleaner. The centrifugal dust filter has much less loss of suction and the vacuum cleaner can remove twice as much dust as the popular cylinder cleaners. Air stream of smaller motor-fans/blowers of the invention can not spread exhaust air with bacteria, particles of dust etc all around the room as the powerful vacuum cleaners and therefore cleaning with the new vacuum cleaner does not require the surface cleaning due to vacuum cleaning. Due to the new filter, the consumption of power is much less and batteries could last or operate longer with each charging.

The long-life clogging-free filter is easy to produce at low cost. Only one filter is needed for each motor-fan and there is no need to change filter. Replacement of the conventional filtration system and the powerful motor-fan with the centrifugal dust filter and smaller motor-fan, makes the construction of the vacuum cleaner simple (require smaller tools for production of plastic housing etc.) and therefore production cost and maintenance of the new vacuum cleaner is much lower in compare with conventional vacuum cleaners. The new centrifugal dust filter with or without cylindrical paper filter, when is used in industrial vacuum cleaners or collectors for filtration/separation and collection of airborne particles during grinding, sanding, sawing, sweeping, vacuum cleaning, ventilating and emitting exhausted gases from combustion chambers and combustions engines, eliminates or reduces clogging and therefore a need for a powerful motor-blower with a strong power to overcome resistance of conventional filters (as a subject of clogging) during filtration and therefore the power or “clean watts” of the smaller motor-blower/fan can provide the same or similar efficiency.

In another embodiment of the present invention, at least two vacuum cleaners are stationary located at different location in the room. From one place, each vacuum cleaner through centrifugal dust filter sucks in the air with airborne dust particles and micro-organisms contained in the room and therefore prevent that particles fall and to be accumulated on the surface in the room. The vacuum cleaner preferably operates all time or non-stop collecting airborne dust particles and micro-organisms. Such vacuum cleaner or “self-operating vacuum cleaner” it doesn't require any man power for operation of cleaning except to empty the dust container from time to time.

The centrifugal dust filter, which is used in a filtration/separation of particles in exhausted gases from any combustion chamber and combustion engine, is provided with a heat-resident grating. The centrifugal fan, the dust container and the protective cover of the exhausting chamber are also made from heat-resident material.

THE BEST MODE TO CARRY OUT THE INVENTION

In FIGS. 1 a and 1 b is disclosed a compact vacuum cleaner (26) in a combination with an UV germicidal lamp fixture (14), as one embodiment of the present invention, which is provided with a centrifugal dust filter (54) mounted on a centrifugal fan's impeller (53 a) and with a dust container (27) having a transparent bottom (28) and non-transparent sides (29). The dust container (27), which is supported by four wheels (30), is covered with an attachable protective housing (31). The UV germicidal lamp fixture (14) and the centrifugal fan (53) for sucking in the air are attached to the ceiling of the protective housing (31) toward the dust container (27). A handling stick (33) is attached to the protective housing (31). A transparent or non-transparent suction nozzle (34) is incorporated in the transparent bottom (28) of the dust container (29), which is transparent for ultraviolet UV-C rays. The tubular UV germicidal lamp fixture (14) is located parallel to the long side of the protective housing (31) radiating the cleaning area which is determined by the protective housing (31). The radiation which is reflected from the cleaning surface is directed toward the space between the protective housing (31) and the non-transparent sides (29) of the dust container (27) preventing leakage of radiation outside. The radiation from the UV germicidal lamp fixture (14) through the transparent bottom (28) destroys bacteria, viruses and other micro-organisms on the cleaning surface during movement of the vacuum cleaner (26) and inside the dust container (27) all the time during cleaning. If some bacteria and viruses are not destroyed instantly on the cleaning surface they would be destroyed in the dust container (27) later on during cleaning. An automatic mechanically releasing arm (19) of an on/off switch (20) connected to the UV germicidal lamp fixture (14) disconnects electricity from the lamp fixture (14) when the protective housing (31) is lifted “up”.

If the transparent suction nozzle (34) is not incorporated in the bottom (28), a connecting tube (72), a handling tube and a hose can connect a conventional suction nozzle (8) with the vacuum cleaner (26). It means that the UV germicidal lamp fixture (14) in the compact vacuum cleaner (26) does not radiate the cleaning surface but it sterilizes the air with bacteria and viruses which are sucked in the dust container (27).

In FIGS. 2 a and 2 b is disclosed the compact vacuum cleaner (26) in a combination with an UV germicidal lamp fixture (14), as another embodiment of the present invention, which is provided with a dust container (27) and with a centrifugal dust filter (54) mounted on a fan's impeller (53 a). The dust container (27) is covered with a protective housing (31) having the centrifugal fan (53) for sucking in the air. The tubular UV germicidal lamp fixture (14) is mounted to the protective housing (31) radiating the area determined by the protective housing (31) and the dust container (27).

A conducting cylinder (32), which is located in the dust container (27) with its opening (55) toward the centrifugal dust filter (54), separates the dust container (27) from the air stream which is sucked in by the centrifugal fan (53) from the opening (66) of the suction nozzle (34). The radiation from the UV germicidal lamp fixture (14) destroys bacteria, viruses and other micro-organisms inside the dust container (27) all the time. An automatic mechanically releasing arm (19) of an on/off switch (20) connected to the UV germicidal lamp fixture (14) disconnects electricity from the UV germicidal lamp fixture (14) when the attachable dust container (27) is separated from the protective housing (31) to avoid radiation outside of the protection housing (31).

The above embodiment is used for mechanical separation of particles in industrial vacuum cleaners or other similar apparatus used in processing industries for filtration/separation and collection of airborne particles during grinding, sanding, sawing, sweeping, vacuum cleaning, ventilating and emitting exhausted gases from combustion chambers and combustions engines.

In FIGS. 3 a-3 f is disclosed the centrifugal dust filter (54) which is mounted to the impeller (53 a) or to the rotor of the centrifugal or axial fan (53) or to the shaft of the motor (52). The centrifugal dust filter (54) comprising a circular or cylindrical grating (62) or net with or without a circular or cylindrical paper (or another type of) filter (63), which is used for dust bags. The cylindrical grating (62) is in a shape of an open top cylinder like a squirrel cage or a cylinder or cone with a plurality of longitudinally disposed slots. The grating (62) consists of number of bars with gaps or slots there between. The fan' impeller (53 a) sucks in the air trough those gaps or slots.

The grating (62) can be secured at the cylindrical opening (59) of the impeller's ring circular front-plate (58) of the centrifugal fan (53) or to the ends of impeller's blades of the axial fan (53 a) or on the rotor's or motor's shaft which drives the fan's impeller.

The grating (62) supports the paper (or another kind) filter (63) if any and prevents that the fan's impeller (53 a) sucks in dust particles. The centrifugal dust filter (54) is located in a line with or outside the cylindrical inlet (64) of the fan's casing (60) but inside the dust container (22). The cylindrical casing (60) of the fan (53) has an air outlet (61) which is located outside the dust container (22). The centrifugal fan's impeller (53 a) having blades (56) secured between a circular back-plate (57) and a ring circular front-plate (58). The circular front-plate (58) has at its centre a cylindrical opening (59) for sucking in the air. The centrifugal fan's impeller (53 a) is located in a cylindrical casing (60), which is mounted to the ceiling of the protective housing (31). The cylindrical inlet (64) of the casing (60) is toward the dust container (27).

The impeller (53 a) of the centrifugal or axial fan (53), rotating at high speed, sucks in the air through the grating (62) with or without the paper filter (63) on it. Due to the centrifugal force, dust particles or another kind of particles are thrown outward from the grating (62) or the paper filter (63) toward the room inside the dust container (27).

The centrifugal fan' impeller (53 a) and the grating (62) can make the air stream spinning, so dust particles, which are subject to centrifugal force, are thrown out from the air toward the room inside the dust container. The higher the speed of the impeller, the higher is the centrifugal force. The conducting cylinder (32) directs and separates the air stream from the rest of the dust container (27). The centrifugal dust filters (54), in a new production of conventional vacuum cleaners having dust bags, could stop (in another dust chamber) fine particles of dust which passing through conventional dust bags improving the purification of air. The air purification with a mechanical separation of dust particles from the air by the paper filter (63) eliminates a need for expensive filters or other methods of purification (through water etc) to meet requests from people who are allergic on dust or asthmatic. The centrifugal dust filter (54) is used for mechanical separation of particles in industrial vacuum cleaners or other similar apparatus used in processing industries for filtration or separation and collection of airborne particles during grinding, sanding, sawing, sweeping, vacuum cleaning, ventilating and emitting exhausted gases from combustion chambers or engines.

In FIGS. 4 a-4 c is disclosed another embodiment of the invention in which one or both parts of the conventional handling tube of the vacuum cleaner (1) is replaced with a sterilizing chamber (36) or with sterilizing chamber (36) having a transparent handling tube (35). The sterilizing chamber (36) consisting of a non-transparent tube (37) which top opening is used for inserting and securing a circular top cover (38) or the cylindrical inlet (64) of cylindrical casing (60) of a centrifugal fan (53) when the chamber (36) is used as a dust container (27). The bottom opening of the non-transparent tube (37) is used for inserting and securing a circular bottom cover (40). The circular top cover (38) comprising a hole (39) for inserting the tube of flexible hose (42). The circular bottom cover (40) comprising a hole (41) for inserting a conventional handling tube (8) or the suction nozzle tube (51). The UV germicidal lamp fixture (14; 44), which is located longitudinally inside the tube (37) of the sterilizing chamber (36), is attached to shock-absorbers (6 a). The speed of the air flow which is sucked in by the vacuum cleaner (1) is reduced inside the sterilizing chamber (36) due to increased volume providing a longer time of exposure of bacteria, viruses and micro-organisms to radiation and sterilization. The sterilizing chamber (36) having the transparent handling tube (35) conducts the air or the air with dust through the transparent handling tube (35), which is transparent for UV-C rays, from the conventional handling tube (8) or the tube of suction nozzle (51) or directly to the tube of flexible hose. The tubular UV germicidal lamp fixture (14; 44) radiates inside the sterilizing chamber (36) or inside the sterilizing chamber (36) and the transparent handling tube (35). The UV germicidal lamp fixture (14; 44) and the transparent handling tube (35) if any are surrounded by the non-transparent tube (37) of the sterilizing chamber (36) and the top and bottom cover (38; 40) which are non-transparent for UV-C rays avoiding radiation. The radiation from the UV germicidal lamp fixture (14) destroys bacteria, viruses and other micro-organisms contained in the air and the dust which passing through the sterilizing chamber (36) or the transparent handling tube (35). The UV germicidal lamp fixture (14) can indirectly radiate by reflection the cleaning surface if the inner surface of other components, which conducting the air, are coated with reflective material.

Ozone, which is produced by the radiation from the ozone type UV germicidal lamp fixture (44) in the air passing through the transparent handling tube (35) or the sterilizing chamber (36), is dragged out by the vacuum cleaner (1) into a room destroying bacteria and viruses on the room's surface. The tubular ozone type UV germicidal lamp fixture (44) is activated or inactivated by a motion sensor or a wireless remote control set (46;47;48) through an on/off switch (45) connected to the ozone UV germicidal lamp fixture (44) providing a safe usage of such lamp fixture (44) in a combination with the vacuum cleaner (1) avoiding the usage of a long cable.

In FIGS. 5 a and 5 b is disclosed one embodiment of the invention which comprising a protective housing (15) and a germicidal lamp fixture (14) having sterilizing effect. The protective housing (15) comprising an inner compartment (17) which surrounds the lamp fixture (14). The lamp (14) radiates the cleaning surface which reflects rays toward the space between the inner compartment (17) and the protective housing (15) preventing leakage of radiation outside. The UV germicidal lamp fixture (14) is located parallel to the long side of the protective housing (15) and transversal to the direction of movement. The fixture (14) is located toward and parallel to the cleaning surface equally radiating that surface in the area which is determined by the protective housing (15). The protective housing (15) is supported with at least two wheels (18), which are located in the space between the inner compartment (17) and the protective housing (15). The protective housing (15) is attached to the suction nozzle (4) of the compact vacuum cleaner (26). The suction nozzle (4) protects the protective housing (15) and the lamp inside the lamp fixture (14) to be damaged because the suction nozzle (4) of the vacuum cleaner strikes directly at the furniture or walls during movement forward. The shock-absorbers (16 a) absorb shocks which the suction nozzle (4) makes striking at the furniture avoiding damages of the lamp and the lamp fixture (14). An automatic mechanically releasing arm (19) of an on/off switch (20) can be used to disconnect electricity from the lamp and the lamp fixture (14) when the protective housing (15) is in “up” position avoiding the outside radiation. Radiation from the UV germicidal lamp fixture (14) destroys micro-organisms on the cleaning surface during cleaning.

In FIGS. 6 a and 6 b is disclosed another embodiment of the invention comprising an electrically or mechanically driven broom (sweeper) (2) combined with an UV germicidal lamp fixture (14). The broom's housing (5) is provided with the tubular UV germicidal lamp fixture (14) having sterilizing effect, which is attached to the ceiling of the broom's housing (5) and which is parallel to the long side of the broom's housing (5) and transversal to the direction of broom's movement. A conventional dust container of the broom (2) is replaced with a dust container (22) which consists of non-transparent sides (23) and a transparent bottom (24), which is transparent for ultraviolet germicidal UV-C rays or radiation. The UV germicidal lamp fixture (14) radiates toward the cleaning surface through the transparent bottom (24) during cleaning radiating the cleaning area which is determined by the broom's housing (5). The radiation which is reflected from the cleaning surface is directed toward the space between the broom's housing (5) and the non-transparent sides (23) of the dust container (22) preventing leakage of radiation outside. Radiation from the UV germicidal lamp fixture (14) through the transparent bottom (24) during movement destroys bacteria, viruses and other micro-organisms on the cleaning surface and inside the dust container (22) all the time during cleaning. Some bacteria and viruses which are not destroyed instantly on the cleaning surface would be destroyed in the dust container (22) during cleaning. An automatic mechanically releasing arm (19) of an on/off switch (20) connected to the UV germicidal lamp fixture (14) disconnects electricity from the UV germicidal lamp fixture (14),when the broom's housing (5) is in “up” position providing a protection from radiation.

In FIGS. 7 a and 7 b (the claim 8) is disclosed another embodiment of the invention in which the UV black-light lamp fixture (3) is attached to the suction nozzle (4) of the vacuum cleaner (1) through two shock-absorbing arms (6). The arms (6) have shock absorbers (6 a) located between arm strips (6 b). The ends of the arm strips (6 b) are mounted to the suction nozzle (4) on one side and to wheels (7) on another side,

The absorbers (6 a) absorb shocks which the suction nozzle (4) makes during striking at furniture during cleaning. The UV black-light lamp fixture (3), which is located parallel to the long side of the suction nozzle (4), is attached from behind the suction nozzle (4). The suction nozzle (4), which is located in the front of the lamp (3), protects the lamp fixture (3) to be damaged when the suction nozzle (4) strikes at the furniture during movement forward. The UV black-light lamp fixture (3) during cleaning illuminates the cleaning area behind the suction nozzle (4) in each movement of the suction nozzle (4) forward causing the rest of white, luminous and fluorescent particles or substances (which are not removed) to glow or to be better visible indicating if any need to move the suction nozzle (4) backward for an addition cleaning. The tubular UV black-light lamp fixture (3) is located toward and parallel to the cleaning surface improving visibility at the cleaning surface along the length of the lamp (3) which is transversal to the direction of movement during cleaning. The UV black-light lamp fixture (3) is located at a height which allows to a person who cleans to see the illuminated surface and to use the handling tube (8) of the vacuum cleaner (1) in a position which is parallel relative to the cleaning surface during cleaning the narrow space between the floor and the furniture.

In FIGS. 8 a-8 d (the claim 9) is disclosed another embodiment of the invention in which the tubular UV black-light lamp fixture (3) is attached parallel or transversal to the handling tube (8) of the vacuum cleaner (1) while the compact black-light lamp fixture (9) is attached parallel and longitudinally to the handling tube. The UV black-light lamp fixture (3) is attached from behind the handling tube (8) and therefore located from behind the suction nozzle (4) too. The suction nozzle (4), which is in the front relative to the lamp fixture (3), protects the lamp fixture (3) to be damaged when the suction nozzle (4) strikes directly at the furniture during movement forward. The UV black-light lamp fixture (3) is attached to the handling tube (8) with at least one shock-absorbing connecting element (10), which consists of a plate (11) which one part has a hole (12) for inserting the handling tube (8) in it and another part which is attached through an shock absorber (6 a) to the tubular lamp fixture (3) or a socket (13) of the compact lamp fixture (9). The connecting element (10) rotates around the handling tube (8) if it is forced. The shock-absorbers (6 a) absorb shocks, which are transferred through the handling tube (8) from the suction nozzle (4), which strikes at the furniture. Shock-absorbers (6 a) reduce risks of the lamp fixture's (3; 9) damages. The UV black-light lamp fixture (3; 9) during cleaning illuminates the cleaning area behind the handling tube (8) in each movement of the handling tube (8) forward causing the rest of white, luminous and fluorescent particles or substances (which are not removed) to glow or to be better visible indicating if any need to move the handling tube (8) backward for an addition cleaning. The tubular UV black-light lamp fixture (3), which is located transversal to the handling tube (8), is located toward and parallel to the cleaning surface and parallel to the long side of the suction nozzle (8) illuminating the cleaning surface along the length of the lamp fixture (3) which is transversal to the direction of movement during cleaning. The UV black-light lamp fixture (3) and the compact UV black-light lamp fixture (9) which is attached parallel to the handling tube (8) emitting black light toward the cleaning surface improving visibility.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1 a-1 d illustrate a top view of a dust container (27) and a laterally cross-section view of a compact vacuum cleaner (26) consisting of an UV germicidal lamp fixture (14), a centrifugal fan (53) with a centrifugal dust filter (54) and the dust container (27) with a transparent bottom (28).

In FIGS. 1 a and 1 c is shown the dust filter (54) which has the grating (62) in the line with the cylindrical inlet (64) and another one which has the grating (62) outside the cylindrical inlet (64). Both dust filters (54) have the paper filter (63).

FIGS. 2 a & 2 b illustrate laterally cross-section vies of compact vacuum cleaners (26) one having a centrifugal fan (53) and another one having axial fan (53). Both fans having the centrifugal dust filters (54) with gratings (62) are used as separators and collectors.

FIGS. 3 a-3 f illustrate a laterally cross-section and top view of the grating (62) in the line and outside the cylindrical inlet (64) belong to the centrifugal-radial and axial fans (53).

FIGS. 4 a-4 c illustrate laterally cross-section views of sterilization chambers (36).

FIG. 4 a shows the sterilization chamber (36) having an UV germicidal lamp fixture (14), as an attachment to a handling tube (8). FIG. 4 b illustrates the sterilization chamber (36) having a transparent handling tube (35) and an ozone type UV germicidal lamp fixture (44). FIG. 4 c illustrates sterilization chamber (36) having a centrifugal fan (53) with a cylindrical centrifugal dust filter (54) and an UV germicidal lamp fixture (14). The sterilization chamber (36) is used as a dust container (27) simultaneously.

FIGS. 5 a and 5 b illustrate a laterally cross-section and a bottom view of an attachment to a suction nozzle (4) of a vacuum cleaner (1) having an UV germicidal lamp fixture (14).

FIGS. 6 a and 6 b illustrate a laterally cross-section and a bottom view of an electrically or mechanically driven broom (2) having an UV germicidal lamp fixture (14) and a dust container (22) having a transparent bottom (24).

FIGS. 7 a and 7 b (the claim 8) illustrate a laterally and a top view of an attachment to a suction nozzle (4) of a vacuum cleaner (1) having an UV black-light lamp fixture (3).

FIGS. 8 a and 8 d (the claim 9) illustrates laterally views of attachments to handling tubes (8) In which tubular or compact (with a reflector) UV black-light lamp fixtures (3, 9) are located parallel to the handling tubes (8).

FIGS. 8 b and 8 c (the claim 9) illustrate a laterally and a top view of an attachment in which the tubular UV black-light lamp fixture (3) is located transversal to the handling tube (8).

1. A cleaning or sterilizing apparatus combined with UV lamp comprising an upright compact vacuum cleaner (26), an UV germicidal lamp fixture (14) having sterilizing effect and a centrifugal fan (53) having a centrifugal dust filter (54) and an electrical motor (52), wherein the clean-air type multi stage suction centrifugal fan's impeller or the centrifugal fan's impeller (53 a) comprising a number of pairs of blades (56) secured between a circular back-plate (57) and a front-plate (58), wherein the circular front-plate (58) has at its centre a cylindrical opening (59), wherein the centrifugal fan's impeller (53 a) is located in a cylindrical fan's casing (60) having an air outlet (61) and a cylindrical inlet (64), wherein the cylindrical casing (60) is mounted to the ceiling of the protective housing (31), characterized in that the compact vacuum cleaner (26) comprising a dust container (27) having a transparent bottom (28) and non-transparent sides (29), which is supported by four wheels (30) and covered with an attachable protective housing (31) having the centrifugal fan (53) for sucking in the air and in that a transparent suction nozzle (34) is incorporated in the transparent bottom (28) of the dust container (27), which is transparent for the short-wave ultraviolet radiation and in that the tubular UV germicidal lamp fixture (14) is mounted to the ceiling of protective housing (31) toward and parallel to the cleaning surface and longitudinally positioned to the protective housing (31) radiating the cleaning area determined by the protective housing (31) and in that the space between the protective housing (31) and the non-transparent sides (29) of the dust container (27) preventing that the radiation which is reflected from the cleaning surface under the dust container (27) is seen by a person who cleans and in that a conducting cylinder (32), which is located in the dust container (27) with its opening (55) toward the centrifugal dust filter (54), separates the dust container (27) from the air stream which is sucked in by the centrifugal fan (53) from the opening (66) of the suction nozzle (34) and in that during movement of the vacuum cleaner (26) the radiation from the UV germicidal lamp fixture (14) through the transparent bottom (28) destroys bacteria, viruses and other micro-organisms on the cleaning surface and inside the dust container (27) all the time during cleaning so if some bacteria and viruses are not destroyed instantly on the cleaning surface they would be destroyed in the dust container (27) later on during cleaning and in that an automatic mechanically releasing arm (19) of an on/off switch (20) connected to the UV germicidal lamp fixture (14) disconnects electricity from the UV germicidal lamp fixture (14) when the protective housing (31) is lifted up from the dust container (27) to be emptied avoiding radiation outside of the protection housing (31).

2. A cleaning or sterilizing apparatus combined with UV lamp comprising a compact vacuum cleaner (26 a), an UV germicidal lamp fixture (14) having sterilizing effect and a centrifugal or axial fan (53) having a centrifugal dust filter (54) which is driven by a motor (52) or the air or fluid stream, characterized in that the compact vacuum cleaner (26 a) comprising a dust container (27) which is covered with an attachable protective housing (31) having the fan (53; 53 b) for sucking in the air and in that the tubular UV germicidal lamp fixture (14) is longitudinally mounted to the ceiling of protective housing (31) radiating the area determined by the protective housing (31) and the dust container (27) and in that a conducting cylinder (32), which is located in the dust container (27) with its opening (55) toward the centrifugal dust filter (54), separates the air stream, which is sucked in by the fan (53), from the rest of the dust container (27) and in that the radiation from the UV germicidal lamp fixture (14) destroys bacteria, viruses and other micro-organisms inside the dust container (27) and in that an automatic mechanically releasing arm (19) of an on/off switch (20) connected to the UV germicidal lamp fixture (14) disconnects electricity from the UV germicidal lamp fixture (14) when the protective housing (31) is lifted up.

3. The cleaning or sterilizing apparatus according to claim 1 or 2 characterized in that the impeller (53 a) of the fan (53) comprising the centrifugal dust filter (54), which consists of a circular or cylindrical grating (62) with or without a circular or cylindrical paper filter (63) and in that the circular or cylindrical grating (62), which supports and secures the circular or cylindrical paper filter (63), is secured in the cylindrical opening (59) of the fan's impeller (53 a) and in that the centrifugal dust filter (54) is in the line with or outside the cylindrical inlet (64) and in that the fan's impeller (53 a) rotating at high speed sucks in the air through the grating (62) and the paper filter (63) while particles of dust coming at the grating (62) with or without the paper filter (63) are thrown by a centrifugal force outward toward the room in the dust container (27) passing through the space between the dust filter (54) and the opening (55) of the conducting cylinder (32) which conducts the air from the suction nozzle (34) toward the centrifugal dust filter (54) separating the air stream from the dust container (27) and in that the centrifugal dust filter (54) which prevents that any dust particles go outside from the vacuum cleaner (26) is used for the air purification during cleaning with the vacuum cleaner (1;26) with or without a conventional dust bag and in that the centrifugal dust filter (54) is used for mechanical separation of particles in industrial vacuum cleaners or other similar apparatus used in processing industries.

4. A cleaning or sterilizing apparatus combined with UV lamp comprising a vacuum cleaner (1) and an UV germicidal lamp fixture (14) having germicidal or disinfecting effect or an ozone type UV germicidal lamp fixture (44) emitting the short-wave ultraviolet radiation which produces ozone having germicidal or disinfecting effect, characterized in that one or both parts of the conventional handling tube of the vacuum cleaner (1) is replaced with a sterilizing chamber (36) or with sterilizing chamber (36) having a transparent handling tube (35) and in that the sterilizing chamber (36) consisting of a non-transparent tube (37) which top opening is used for inserting and securing a circular top cover (38) or the cylindrical inlet (64) of cylindrical casing (60) of a centrifugal fan (53) with a dust filter (54) and in that the bottom opening of the non-transparent tube (37) is used for inserting and securing a circular bottom cover (40) and in that the circular top cover (38) comprising a hole (39) for inserting the tube of flexible hose (42) and in that the circular bottom cover (40) comprising a hole (41) for inserting the conventional handling tube (8) or the tube of suction nozzle (51) and in that the UV germicidal lamp fixture (14; 44), which is located longitudinally inside the tube (37) of the sterilizing chamber (36), is attached to shock-absorbers (6 a) and in that the speed of the air which is sucked in by the vacuum cleaner (1) is reduced inside the sterilizing chamber (36) due to increased volume providing a longer time of exposure of bacteria, viruses and micro-organisms to radiation and sterilization and in that the sterilizing chamber (36) having the transparent handling tube (35) conducts the air or the air with dust through the transparent handling tube (35), which is transparent for UV-C rays, from the conventional handling tube (8) or the tube of suction nozzle (51) or directly to the tube of flexible hose (42) and in that the tubular UV germicidal lamp fixture (14; 44) radiates inside the sterilizing chamber (36) or inside the sterilizing chamber (36) and the transparent handling tube (35) and in that the UV germicidal lamp fixture (14;44) and the transparent handling tube (35) if any are surrounded by the non-transparent tube (37) of the sterilizing chamber (36) and the top and bottom cover (38;40) which are non-transparent for UV-C rays avoiding radiation and in that the radiation from the UV germicidal lamp fixture (14) destroys bacteria, viruses and other micro-organisms contained in the air or the air with dust which passing through the sterilizing chamber (36) or the transparent handling tube (35) and in that the UV germicidal lamp fixture (14) can indirectly radiate by reflection the cleaning surface if the inner surface of other components conducting the air are coated with reflective material and in that ozone, which is produced by the radiation from the ozone type UV germicidal lamp fixture (44) in the air passing through the transparent handling tube (35) or the sterilizing chamber (36), is dragged out by the vacuum cleaner (1) into a room destroying bacteria, viruses and other micro-organisms on the surface of the room and in that in absence of anybody the tubular ozone type UV germicidal lamp fixture (44) is activated or inactivated by a motion sensor or a wireless remote control set (46;47;48) through an on/off switch (45) connected to the ozone type UV germicidal lamp fixture (44) providing a safe usage of such lamp fixture (44) in a combination with the vacuum cleaner (1) avoiding the usage of a long cable and its installation every time when a purification of air is needed.

5. A cleaning or sterilizing apparatus combined with UV lamp comprising a vacuum cleaner (1) or an electrically or mechanically driven broom (2) and an UV germicidal lamp fixture (14) having germicidal or sterilizing effect, characterized in that the tubular UV germicidal lamp fixture (14) is located inside a protective housing (15) which is attached at the back the suction nozzle (4) of the vacuum cleaner (1) or to the broom's housing (5) with two shock-absorbing arms (16) and in that the suction nozzle (4) or the broom's housing (5), which is in the front of the protective housing (15) protects the lamp fixture (14) to be damaged striking directly at the furniture during movement forward and in that the shock-absorbers (16 a) absorb shocks which the suction nozzle (4) makes striking at the furniture avoiding damages of the lamp fixture (14) and in that the protective housing (15) comprising an inner compartment (17) surrounding the lamp fixture (14) which is attached to the ceiling toward the cleaning surface and therefore the radiation which is reflected from the cleaning surface is directed toward the space between the inner compartment (17) and the protective housing (15) preventing leakage of radiation outside and in that the protective housing (15) is supported with at least two wheels (18), which are located in the space between the inner compartment (17) and the protective housing (15) and in that the UV germicidal lamp fixture (14) inside the protective housing (15) is located parallel to the long side of the suction nozzle (4) or the housing of broom (5) and toward and parallel to the cleaning surface equally radiating that surface in the area which is determined by the protective housing (15) and in that an automatic mechanically releasing arm (19) of an on/off switch (20), which is incorporated in a handle (21) and connected to the UV germicidal lamp fixture (14), is used to disconnect electricity from the lamp fixture (14) when a person who cleans releases it by the hand avoiding the radiation outside of the protective housing (15).

6. A cleaning or sterilizing apparatus combined with UV lamp comprising an electrically or mechanically driven broom (2) and an UV germicidal lamp fixture (14) having germicidal or disinfecting effect, characterized in that the tubular UV germicidal lamp fixture (14), which is attached to the ceiling of the broom's housing (5), is parallel to the long side of the broom's housing (5) and transversal to the direction of movement of the broom (2) and in that a conventional dust container of the broom (2) is replaced with a dust container (22) which consists of non-transparent sides (23) and a transparent bottom (24), which is transparent for ultraviolet germicidal UV-C rays or radiation and in that the UV germicidal lamp fixture (14) radiates toward the cleaning surface through the transparent bottom (24) during cleaning radiating the cleaning area which is determined by the broom's housing (5) and in that the radiation which is reflected from the cleaning surface is directed toward the space between the broom's housing (5) and the non-transparent sides (23) of the dust container (22) preventing leakage of radiation outside and in that radiation from the UV germicidal lamp fixture (14) through the transparent bottom (24), during movement, destroys bacteria, viruses and other micro-organisms on the cleaning surface and inside the dust container (22) all the time during cleaning and in that if some bacteria and viruses are not destroyed instantly on the cleaning surface they would be destroyed in the dust container (22) later on during cleaning and in that as an additional protection from radiation, an automatic mechanically releasing arm (19) of an on/off switch (20) connected to the UV germicidal lamp fixture (14) disconnects electricity from the UV germicidal lamp fixture (14) when the broom's housing (5) is lifted.

7. The cleaning or sterilizing apparatus combined with UV lamp according to any of claims 1, 4-6 characterized in that the UV germicidal lamp fixture (14) having germicidal or sterilizing effect is used during cleaning in a combination with the vacuum cleaner (1) or electrically or mechanically driven broom (2) for sterilizing bacteria, viruses and other primitive organisms in the air or the air with dust passing through a transparent handling tube (35) or the sterilizing chamber (36), or in the air and dust contained in the dust container (27) having a transparent bottom (28), or on the cleaning surface which comes behind the suction nozzle (4) or the broom's housing (S) avoiding the usage of chemical for sterilization of the cleaning area and in that UV germicidal lamp fixture (14) having germicidal action in the air with dust passing the transparent handling tube (35) or the sterilizing chamber (36) is used to prevent that a person who cleans, inhales alive viruses and bacteria which are sucked in from the cleaning surface and spread all over a room by a vacuum cleaner (1) during cleaning.

8. The cleaning or sterilizing apparatus combined with UV lamp according to any of claims 1, 4-6 characterized in that the UV black-light lamp fixture (3) having black-light effect is attached to the suction nozzle (4) of the vacuum cleaner (1) or to the broom's housing (5) through two shock-absorbing arms (6) having shock absorbers(6 a) between arm strips (6 b), which ends are mounted to the suction nozzle (4) or to the housing (5) on one side and to wheels (7) on another side absorbing shocks which the suction nozzle (4) or the broom's housing (5) makes striking at furniture during cleaning and in that the UV black-light lamp fixture (3) is attached from behind the suction nozzle (4) or the broom's housing (5) and parallel to the long side of the suction nozzle (4) or the broom's housing (5) and in that the suction nozzle (4) or the broom's housing (5), which is in the front of the lamp (3) protects the lamp fixture (3) to be damaged striking directly at the furniture during movement forward and in that the UV black-light lamp fixture (3) during cleaning illuminates the cleaning area behind the suction nozzle (4) or the broom's housing (5) in each movement of the suction nozzle (4) or the broom's housing (5) forward causing the rest of white, luminous and fluorescent particles or substances (which are not removed) to glow or to be better visible indicating if any need to move the suction nozzle (4) or the broom's housing (5) backward for an addition cleaning and in that the tubular UV black-light lamp fixture (3) is located toward and parallel to the cleaning surface improving visibility at the cleaning surface along the length of the lamp (3) which is transversal to the direction of movement during cleaning and in that the UV black-light lamp fixture (3) is located at a height which allows to a person who cleans to see the illuminated surface and to use the handling tube (8) of the vacuum cleaner (1) in a position which is parallel relative to the cleaning surface during cleaning the narrow space between the floor and the furniture.

9. The cleaning or sterilizing apparatus combined with UV lamp according to any of claims 1, 4-6 characterized in that the tubular UV black-light lamp fixture (3) having black-light effect is attached parallel or transversal to the handling tube (8) of the vacuum cleaner (1) while the compact black-light lamp fixture (9) is attached parallel to the handling tube (8) and in that the UV black-light lamp fixture (3) is attached from behind the handling tube (8) and therefore located from behind the suction nozzle (4) too and in that the suction nozzle (4) which is in the front of the lamp fixture (3) protects the lamp fixture (3) to be damaged striking directly at the furniture during movement forward and in that the UV black-light lamp fixture (3) is attached to the handling tube (8) with at least one shock-absorbing connecting element (10), which consists of a plate (11) which one part has a hole (12) for inserting the handling tube (8) in it and another part which is attached through an shock absorber (6 a) to the tubular lamp fixture (3) or a socket (13) of the compact lamp fixture (9) and in that the connecting element (10) rotates around the handling tube (8) if it is forced avoiding damages and in that the shock-absorbers (6 a) absorb shocks which are transferred through the handling tube (8) from the suction nozzle (4) striking at the furniture avoiding damages of the lamp fixture (3; 9) and in that the UV black-light lamp fixture (3; 9) during cleaning illuminates the cleaning area behind the handling tube (8) in each movement of the handling tube (8) forward causing the rest of white, luminous and fluorescent particles or substances (which are not removed) to glow or to be better visible indicating if any need to move the handling tube (8) backward for an addition cleaning and in that the tubular UV black-light lamp fixture (3), which is located transversal to the handling tube (8), is located toward and parallel to the cleaning surface and parallel to the long side of the suction nozzle (8) illuminating the cleaning surface along the length of the lamp fixture (3) which is transversal to the direction of movement during cleaning and in that the UV black-light lamp fixture (3) and the compact UV black-light lamp fixture (9) which is attached parallel to the handling tube (8) emitting black light toward the cleaning surface improving visibility.

10. The cleaning or sterilizing apparatus combined with UV lamp according to claim 8 or 9 characterized in that a method for improving visibility consists of an illumination of the cleaning surface during each movement of the suction nozzle (4) of a vacuum cleaner (1) or broom's housing (5) of the cleaning apparatus forward with the black-light lamp fixture (3) which causes that the rest of white, luminous and fluorescent particles or substances, which are not removed behind the suction nozzle (4) or broom's housing (5), to glow or to be visible or better visible indicating if any need to move the suction nozzle (4) or broom's housing (5) backward for an addition cleaning and in that the UV black-light lamp fixture (3) is used during cleaning in a combination with the cleaning apparatus having a germicidal lamp fixture (14) for sterilizing and improving visibility causing fluorescent particles and substances to glow and to be visible or better visible and white and luminous particles and substances to be better visible on the cleaning surface and in that the UV black-light lamp fixture (3) is used for control of the cleaning surface behind the suction nozzle (4) or broom's housing (5) indicating if the cleaning should be repeated or not and therefore repeatedly cleaning of the same cleaning section can be avoided and in that the UV black-light lamp fixture (3) is used in a combination with the cleaning apparatus with or without a germicidal lamp fixture (14) during cleaning and/or sterilizing for detection of fluorescent substances contained in dry urine of animal, hydraulic or regular motor oil, milk, yogurt, blood, fibre, semen etc. which are not removed from the cleaning surface with the cleaning apparatus indicating that the cleaning should be done with another method and in that the UV black-light lamp fixture (3) is used in a combination with the cleaning apparatus with or without a germicidal lamp fixture (14) during cleaning and/or sterilizing for detection of cracks on a floor or a roof detecting a rest of previously applied fluorescent particles which was drawn by capillary action into cracks and therefore could not be removed by the cleaning apparatus and in that the UV black-light lamp fixture (3) is used in a combination with the cleaning apparatus with or without a germicidal lamp fixture (14) during cleaning and/or sterilizing for inspection of the surface of the floor before lacquering or painting and in that the UV black-light lamp fixture (3) is used in a combination with the cleaning apparatus with or without a germicidal lamp fixture (14) for surveying whether the surface of the floor is thoroughly covered by transparent coating or lacquer which was previously mixed with a fluorescence substance, as non-coated or non-lacquered parts of the surface do not fluoresce and in that the UV black-light lamp fixture (3) is used during cleaning and/or sterilizing in a combination of a kickboard or scooter or bicycle with the cleaning apparatus or the cleaning and sterilizing apparatus for increasing speed of the cleaning of the long corridors of hospitals, hotels, airports, industrial and public area etc. 

1.-8. (canceled)
 9. A compact vacuum cleaning apparatus comprising, a protective housing and a dust container detachable connected thereto, an electrical motor for driving an impeller of a centrifugal fan, a fan housing having an air outlet and an air inlet, a suction nozzle and a dust filter, comprising the dust filter is a centrifugal dust filter connected to and rotating with the fan impeller.
 10. A compact vacuum cleaning apparatus comprising, a protective housing and a dust container detachable connected thereto, an axial fan with an impeller driven by a fluid stream, a fan housing having an air outlet and an air inlet, a suction nozzle and a dust filter, comprising the dust filter is a centrifugal dust filter connected to and rotating with the fan impeller.
 11. A compact vacuum cleaning apparatus according to claim 9, wherein the suction nozzle is integrated in the bottom of the dust container and comprising a conducting cylinder having one suction opening and one opening facing the centrifugal dust filter.
 12. A compact vacuum cleaning apparatus according to claim 9, wherein the fan comprises a number of blades, which are secured between a circular back-plate and a front-ring plate having an opening and in that the centrifugal dust filter is fixed to the edge of said opening of the front-ring plate.
 13. A compact vacuum cleaning apparatus according to claim 9, wherein the centrifugal dust filter comprises a cylindrical grating in form of an open top cylinder with a plurality of longitudinally disposed slots.
 14. A compact vacuum cleaning apparatus according to claim 9, wherein the centrifugal dust filter comprises a circular grating with a plurality of radially disposed slots.
 15. A compact vacuum cleaning apparatus according to claim 9, wherein the cylindrical or circular grating supports and secures a paper filter which surrounds the grating.
 16. A compact vacuum cleaning apparatus according to claim 9, wherein the centrifugal dust filter protrudes outside the fan housing.
 17. A compact vacuum cleaning apparatus according to claim 9, wherein it further comprises a UV germicidal lamp mounted parallel to the cleaning surface and in that the dust container comprises a UV transparent bottom and non-transparent sides.
 18. A compact vacuum cleaning apparatus according to claim 9, wherein a switch with an automatically releasing arm is arranged to interrupt the power supply to the UV germicidal lamp when the dust container and the protective housing are detached from each other. 